Mountaineer V8-302 5.0L VIN P EFI (1998)
Piston: Testing and Inspection
Inspection
1. Clean and inspect the (A) ring lands, the (B) skirts, the (C) pin bosses, and the (D) top of the pistons.
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If wear marks or polishing is found on the piston skirt, check for a bent or twisted connecting rod and inspect the piston pin.
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Check the piston pin and pin bore diameters; refer to the procedure in this section.
CAUTION: Do not use a caustic cleaning solution or a wire brush to clean the piston, pin and rings or damage may occur.
2. Use Piston Ring Groove Cleaner to clean the piston ring grooves.
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Make sure the oil ring holes are clean.